function size(){
    if ($(window).height() < 800){
        $(".login").css("height","800px");
    }
    else{
        $(".login").css("height","100%");
    }
    if ($(window).height() < 800){
        $(".homePage").css("height","800px");
    }
    else{
        $(".homePage").css("height","100%");
    }

    if ($(window).width() < 1200){
        $(".login").css("width","1200px");
    }
    else {
        $(".login").css("width","100%");
    }
    if ($(window).width() < 1200){
        $(".homePage").css("width","1200");
    }
    else {
        $(".homePage").css("width","100%");
    }
}
window.onload = function(){
    size();
}
window.onresize = function() {
    size();
}



	//placeholder 兼容ie
	$(function() {
		var placeholderfriend = {
			focus: function(s) {
				s = $(s).hide().prev().show().focus();
				var idValue = s.attr("id");
				if(idValue) {
					s.attr("id", idValue.replace("placeholderfriend", ""));
				}
				var clsValue = s.attr("class");
				if(clsValue) {
					s.attr("class", clsValue.replace("placeholderfriend", ""));
				}
			}
		}
		//判断是否支持placeholder
		function isPlaceholer() {
			var input = document.createElement('input');
			return "placeholder" in input;
		}
		//不支持的代码
		if(!isPlaceholer()) {
			$(function() {

				var form = $(this);
				var elements = form.find("input[type='text'][placeholder]");
				elements.each(function() {
					var s = $(this);
					var pValue = s.attr("placeholder");
					var sValue = s.val();
					if(pValue) {
						if(sValue == '') {
							s.val(pValue);
							s.css('color', '#a7aac2');
						}
					}
				});
				elements.focus(function() {
					var s = $(this);
					var pValue = s.attr("placeholder");
					var sValue = s.val();
					if(sValue && pValue) {
						if(sValue == pValue) {
							s.val('');
							s.css('color', '#212355');
						}
					}
				});
				elements.blur(function() {
					var s = $(this);
					var pValue = s.attr("placeholder");
					var sValue = s.val();
					if(!sValue) {
						s.val(pValue);
						s.css('color', '#a7aac2');
					}
				});
				var elementsPass = form.find("input[type='password'][placeholder]");
				elementsPass.each(function(i) {
					var s = $(this);
					var pValue = s.attr("placeholder");
					var sValue = s.val();
					if(pValue) {
						if(sValue == '') {
							s.css('color', '#a7aac2');
							var html = this.outerHTML || "";
							html = html.replace(/\s*type=(['"])?password\1/gi, " type=text placeholderfriend").replace(/\s*(?:value|on[a-z]+|name)(=(['"])?\S*\1)?/gi, " ").replace(/\s*placeholderfriend/, " placeholderfriend value='" + pValue + "' " + "onfocus='placeholderfriendfocus(this);' ");
							var idValue = s.attr("id");
							if(idValue) {
								s.attr("id", idValue + "placeholderfriend");
							}
							var clsValue = s.attr("class");
							if(clsValue) {
								s.attr("class", clsValue + "placeholderfriend");
							}
							s.hide();
							s.after(html);
						}
					}
				});

				elementsPass.focus(function() {
					var s = $(this);
					var sValue = s.val();
					if(sValue == '') {
						s.css('color', '#212355');
					}
				});
				elementsPass.blur(function() {
					var s = $(this);
					var sValue = s.val();
					if(sValue == '') {
						var idValue = s.attr("id");
						if(idValue) {
							s.attr("id", idValue + "placeholderfriend");
						}
						var clsValue = s.attr("class");
						if(clsValue) {
							s.attr("class", clsValue + "placeholderfriend");
						}
						s.hide().next().show();
						s.css('color', '#a7aac2');
					}

				});
			});
		}
		window.placeholderfriendfocus = placeholderfriend.focus;
		
	})
